Means for cooling brickwork of furnaces



April 0, 1928'.

A. E GETZ MEANS FOR COULING BRICKWCRK OP FURNACES Filed March 27. 1926 K IE.

.DI STEHTD E...

Patented Apr. 10,1928.

PATENT OFFICE.

AlLPHIE E. GETZ, OF PEORIA, ILLINOIS.

Means non COOLING BRICKWORK or FURNACES.

Application filed March 27, 1926. Serial No. 97,942.

' cooling lllOlll'lCliWOl'li of furnaces and has special reference to a means for cooling the skcwlmcks and the roof of open hearth furnaces.

.The invention comprehends the application of ducts in or between the units forming the skewbacks of a furnace and-in the provision of a source of air supply thereto; the ducts of air entering into or between the units forming such skewbacks not'only cooling the same but such air will find its way up to and along the under side of the roof of the furnace and tend tokeep such roof cool for a considerable distance from such skewbacks.

When cooling means are.not'provided for skewbacks of open hearth furnaces,th e skewbacks and that part of the roof adjacent thereto become overheated'and under normal conditions is the first .part of the roof structure to burn away. I am aware of water cooling means for skewbacks, but these .all function from outside the furnace and are usually limited to thecooling of four or five inches of the thickness of the brickwork. My invention works on the inside ,of the furnace and cools the brickwork, and keeps it cool by-feeding. a continuous supply of cold air along the skewbacks and the roof adjacent thereto. j i

That the invention maybe more fully understood reference is had to the accom- 'ianyingdrawings forming a part of the description,illustrating a preferred embodiment in which Fig. 1 is a cross-section on. a greatly reduced scale showing a part of a conventional form of open hearth furnace with my invention applied thereto;

Fig. '2 is a detail in cross-section as the same would appear if taken on the line 2 2, Fig. 1, looking in the direction of the arrows; and a v Fig. 3 is a perspective View of an element for conducting cold air to the skewbacks.

Like characters of reference denote corresponding parts thruout the figures.

in the drawings so much of a furnace is shown to illustrate the application of my cooling means thereto. and includes the front and back walls 1 and 2, the arched roof-3, and the skewbacks 4 connecting the front and back walls of said roof.

The units comprising the skewbacks are provided with air ducts 5, which are preferably inclined inwardly and upwardly, as shown, and may be within the units themselves or formed by matching recesses in their adjacent faces. Disposed alongside and adjacent the outer faces of the front and back walls 1 and 2 are air conducting pipes 6 provided with or having connected thereto nozzles 7, which preferably project into-the ducts 5. Said pipes 6 are connected with feeders 8 which, in turn, are connected with any suitable source of air supply, under pressure, not shown. v

'In operation, air supplied to the feeders S is conducted thru the pipes 6, the nozzles 7, and into and thru or between the members constituting the skewbaeks 4,-and such airentering .the interior of the furnace travels upwardly along the skewbaeks and in contact with and on the underneath side of the roof 3.

The function of the air is to increase the life of the skewbacks' and roof by keeping a constant stream of relatively cold air circulating along their inner sides. This not only keeps these members cool but also tends to keep away the hot gases forming a part of the products of combustion in the interior of the furnace.

Although I have described this for skewbacks 'and roofs of furnaces, it is obvious that my cooling means may be applied to other furnace parts.

What I claim is l 1. A furnace, certain of the walls of which are provided with air ducts in proximity to the roof and inclinedtowards the same,

and means for supplying relatively cold air to said air ducts, the latter, due to their inclination, adapted .to discharge such air as to cause it to travel interior ally over a part of such walls and roof surface' 2. A furnace provided with skewbacks extending along certain of its walls, said skew backs arranged with air ducts for the intro- 'duction of air, so directed as to cool said skewbacks and the portions of the roof immediately adjacent thereto, and means for supplying a source of relatively cold air to said air ducts.

ALPHIE E. oE'rz. 

